Form (zoology)

In zoology, the word form (Latin: forma) is a simple way people sometimes talk about living things. But it is not a proper scientific term. According to the rules in the International Code of Zoological Nomenclature, "form" is not an official category. Some form names use Latin words and might look like a binomial name, but they do not mean anything special in science. These names are called unavailable. They do not have a discoverer or date, and they do not follow the usual rules for naming animals. So, while "form" can be used in everyday talk, it does not help scientists classify living things in an important way.

Usage of the term

Some scientists who study animals use the word "form" or "forma" to talk about differences in animals, especially insects. They add these words to the names of animals, but these forms are not official. They can help describe changes based on where animals live or the height at which they are found, but they are not absolute or final categories.

There are special kinds of forms, like "forma geographica" for forms found in certain areas, "forma localis" for forms in very small places, and "forma alta" for forms found at certain heights. Other forms can be linked to seasons, like "forma vernalis" for spring, "forma aestivalis" for summer, and "forma autumnalis" for autumn. Sometimes, scientists use terms like "aberratio" to describe unusual individuals or small groups, such as albinos.